Trouble P0523 - Engine Oil Pressure Sensor - Voltage High

Step 3: Clean your system of junk (temporary files and folders) using Disk Cleanup (cleanmgr)

Over time, your computer accumulates unnecessary files due to normal Internet surfing and daily computer use. If these junk files are not occasionally removed, they can cause the Windows Operating System to perform poorly or cause error 523, possibly due to file conflicts or an overloaded hard drive. Removing such temporary files using the Disk Cleanup utility can not only eliminate error 523, but also significantly improve the performance of your computer.

Tip: Although Disk Cleanup is a great built-in tool, it does not remove all temporary files from your computer. Other programs that you frequently use such Microsoft Office, Firefox, Chrome, Live Messenger, and hundreds of other programs are not cleaned up with Disk Cleanup (including some Microsoft Corporation programs).

Due to the shortcomings of the Windows Disk Cleanup (cleanmgr) utility, we highly recommend using specialized hard drive cleaning/privacy protection software such as WinSweeper [Download] (developed by Microsoft Gold Partner) to clean your entire computer. Running WinSweeper [Download] once a day (using automatic scanning) will ensure that your computer is always clean, running fast and free of %%error_name%% errors related to temporary files.

How to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8 and 10 ):

Step 4: Update device drivers on your computer

523 errors may be due to corrupt or outdated device drivers. Drivers can easily work today and stop working tomorrow for a variety of reasons. The good news is that most often, you can update your device drivers to fix the Error 523 problem.

Due to the time commitment and overall complexity of updating drivers, we highly recommend using a driver update utility such as DriverDoc (developed by Microsoft Gold Partner) to automate this process.

Please note: Your Error 523 may not be related to hardware driver problems, but it's always a good idea to ensure your PC device drivers are up-to-date to maximize PC performance.

Step 5: Use Windows System Restore to “Go back in time” to fix Error 523 problems. System Restore can return system files and programs on your computer to a time when everything worked fine. This could potentially help you avoid the headache of troubleshooting 523 errors.

Please note: Using System Restore will not affect your documents, pictures or other data.

To use System Restore (Windows XP, Vista, 7, 8 and 10) :

Step 6: Uninstall and reinstall the Windows Operating System program associated with Error 523

Instructions for Windows 7 and Windows Vista:

Instructions for Windows XP:

Instructions for Windows 8:

After you have successfully uninstalled your Error 523-associated program (eg. Windows Operating System), reinstall the program according to the Microsoft Corporation instructions.

Tip: If you are absolutely sure that error 523 is related to a specific Microsoft Corporation program, uninstalling and reinstalling the program associated with Error 523 will likely solve your problem.

Step 7: Run Windows System File Checker (“sfc /scannow”)

System File Checker is a handy tool included with Windows that allows you to scan and repair damaged Windows system files (including those related to Error 523).

To run System File Checker ( Windows XP, Vista, 7, 8 and 10 ):

Step 8: Install all available Windows updates

Microsoft is constantly updating and improving Windows system files related to Error 523. Sometimes, to resolve the Runtime Error problem, you simply need to update Windows with the latest service pack or other patch that Microsoft releases on an ongoing basis.

To check for Windows updates (Windows XP, Vista, 7, 8 and 10 ):

Step 9: Perform a clean installation of Windows

Warning: We must emphasize that reinstalling Windows will take a very long time and is too difficult a task to resolve Error 523 problems. To avoid data loss, you must ensure that you have backed up all important documents, images, software installers and other personal data before starting the process. If you are not currently backing up your data, you should do so immediately (download a recommended backup solution) to protect yourself from permanent data loss.

Please Note: If issue 523 persists after a clean install of Windows, your Runtime Error problem MUST be hardware related. In this case, you will likely have to replace the associated hardware that is causing the 523 error.

Still having problem with 523?

Contact us anytime on social media for further assistance:

About the Author: Jay Geater is the President and CEO of Solvusoft Corporation, a global software company focused on innovative services. He has a lifelong passion for computers and loves everything related to computers, software and new technology.

P0523 Engine oil pressure sensor switch high voltage

Error P0523, which is displayed by your on-board computer, indicates a malfunction of the engine oil pressure sensor (EOP). Its task is not to miss the moment of pressure drop, and there is hardly any need to explain how serious the consequences can be if your Lada Granta is not repaired in time. The operation of the device is simple, but extremely useful. Inside it there is a membrane, which bends under the pressure of oil, while closing or opening the contacts. The contacts are connected to a warning light, which will immediately notify the driver if there is a lack of oil in the engine. So, your warning light may be on. The computer reminds you of error P0523. What could have led to this?

In any case, checking the oil level and pressure in your Granta won’t hurt. It's even better to check the entire system, starting with the most suspicious places.

Elements of the Lada Granta heating system

To check the installed radiator, you need to start the car engine and turn on the stove, leaving it on for about thirty minutes (a slightly shorter period is possible). Then they turn off the engine and wait until the engine cools down, after which you need to look into the expansion tank and check the antifreeze level (normally its level should not decrease).

Heater radiator

Replacement of the Lada Granta stove is carried out in accordance with the technological regulations of the manufacturer. But experienced car enthusiasts offer their own schemes for replacing this device, which are successfully used during repair work. First, you need to clear the space under the hood of the car: unscrew the battery terminals and bolts and remove it, remove the throttle body pipes, air ducts, and remove the air filter. After this, you can drain the antifreeze from the engine cooling system.

Work in the interior begins with dismantling the decorative cover of the handbrake: you need to unscrew two screws and release the tunnel fastening on the driver and passenger sides. Now you need to remove the gas pedal by unscrewing three bolts and disconnecting the contact group. Then you should remove the brake pedal mounting pin and press on it, freeing up space for further work.

The cut-off part of the pipes should be pulled out into the engine compartment, then bend the brake pedal and pull the old radiator into the cabin. After installing the new heat exchanger, its pipes are pushed into the cabin from the engine compartment, put on the radiator pipes and securely tightened with new clamps.

The main task of the fan is to take air flow from the outside and deliver it to the deflectors.

The fan is activated by a mechanical button, to which a 12 V power supply is supplied. In the Lada Granta version, the fan operates at one of three speeds. The driver selects the most optimal mode depending on the temperature inside the cabin.

Without resistors, the fan operates at one speed with a stable rpm. There are a total of 3 resistors installed on the board.

When the lever is moved to the first position (three resistors), the fan rotates at the first speed, the very minimum. Transfer to the second position - second speed (two resistors). Transfer to third - third speed (one resistor). The detailed diagram of the stove is shown in the photo.

Installed to regulate the air flow coming from the fan to the glass for blowing through air ducts.

Often, deformation and bending of the plastic body under the influence of temperature leads to flow leakage and depressurization.

Regulates the supply of warm air flow from the stove heater to the car interior. The wider the damper is open, the greater the throughput of the “channel”, and vice versa, the narrower it is, the less.

Its main purpose is to heat the air flow entering the cabin. The heat exchanger is connected to the power unit through two rubber pipes: supply and return for fluid circulation.

The standard location is the central part of the dashboard of the car interior.

Structurally installed inside a plastic interior lighting lamp. To avoid overheating, the sensor is equipped with a forced airflow system.

The installation is designed so as not to distort the actual temperature readings.

We check the serviceability with our own hands

First of all, let's check the most important and easily accessible things. Is the amount of oil in the engine correct? Is the correct oil in the crankcase? Could the wire be shorted to ground? Checking the quality of insulation on wires is carried out visually. If, when replacing the meter with a known good one after starting the engine, the warning lamp does not stop lighting, everything is in order with the device. If strange knocking or grinding noises are heard from the engine, it means that the connecting rod or main bearings are turning, or maybe the oil pump is faulty. Next, to correct error P0523, we will start checking the oil pressure.

Replacing the emergency oil pressure sensor with your own hands

Preparation of the workplace, necessary tools:

Diagnosis of error P0523 and related faults at an authorized dealer:

Diagnostic equipment is connected to the car, the car ignition is turned on (the engine does not start). The first step is to determine whether the error is caused by a single failure or is permanent; to do this, the vehicle errors are erased, after which the engine is started.

If error P0523 is entered again, then the vehicle ignition is turned off from the oil pressure sensor, the wiring block is disconnected, after which the vehicle ignition is turned on again and the circuit is checked for a short to ground. Such a test is carried out as follows: first of all, the blocks on both sides of the electrical circuit are disconnected, a special probe is connected at one end to the positive terminal of the battery, after which it is connected to the terminal of the unit being tested; if the probe diode lights up, then the circuit has passed the short circuit test. If there is no short to ground, the oil pressure sensor is faulty. In cases where the circuit passes the short-to-ground test, the diagnostician moves on to the next step.

The vehicle ignition is turned off again, and the harness block X1.2 is disconnected from the controller. After that, the continuity of the circuit is checked between the contact “X1.2/K4” of the block to the controller and the contact of the block to the oil pressure sensor. If the circuit is in good condition, the faulty controller is to blame for the error; in cases where the circuit is faulty, the wiring harness is ordered to be replaced.

Where is the sensor located and its part number

The DDM is located on the right side of the engine and is screwed into the cylinder head. To replace it, you will need to remove the plastic decorative cover, after which the sensor will be immediately visible. Replacing the sensor itself is very simple, unscrew the old one and install the new one, no additional actions need to be performed.

The article number of the original oil pressure sensor is 11180-3829010-00 . Its cost may vary in different regions, but on average it ranges from 120 to 160 rubles.

How serious is P0523?

The P0523 code is very serious because it can indicate not only a problem with the engine oil pressure sensor, but also a problem with the vehicle's oil system. The car owner may be using the wrong type of oil, or the car's oil level may be too low, for example due to a leak. To avoid serious engine damage, if a P0523 code is detected, it is recommended that you have the fault diagnosed and repaired by a qualified technician as soon as possible.

Reviews

Conclusion The stove heating system of the Lada Granta is completely copied from the Lada Kalina. There are no complaints about the equipment, everything works properly. In order for the mechanism to serve for a long time, it is necessary to systematically carry out inspection and prevention.

Many motorists save on maintenance, as a result of which the service life is reduced. An important factor is the cloudiness of the antifreeze. The manufacturer recommends replacing it every 75,000 km. Exceeding the interval causes deposits to form at the bottom of the radiator and corrosion begins.

The heating system in the cabin of the budget Lada Kalina model can significantly increase comfort for the driver and his passengers. It ensures that the required temperature conditions are maintained inside the car. Along with such useful options as:

• "ABS";
• airbag;
• electric power steering;
• electric front windows;
• front seat heating function,

The design of the interior heater allows the manufacturer to achieve a fairly acceptable level of equipment, which is very worthy for a small-class Lada Kalina model and makes it competitive among its rivals in this segment.

Purpose of the oil pressure sensor

The main purpose of the oil pressure sensor on a Lada Priora with an 8 or 16 valve engine is to emergency inform the driver about a critical decrease in the monitored parameter. This allows you to prevent the engine from operating with oil starvation, which can significantly reduce the life of the power plant.

The oil pressure sensor has a membrane in its design. Its deformation is related to the external influence of the lubricant. As soon as the oil pressure drops below the permissible level, the alarm indicator control circuit is closed. After it catches fire, it is extremely undesirable to continue driving without identifying and eliminating the cause, as this can significantly affect the service life of the motor.

Intake blockage

This is another common cause of winking. The reason lies in the tendency of the lubricant to coke. This leads to clogging of the intake tube. Accordingly, oil does not pass through it and is practically not supplied to the upper part of the engine, which is what the oil sensor reacts to. Such a malfunction can lead to jamming of the camshaft.

If you find out that this is the reason, then you will need to almost completely disassemble the engine. Not every model has the ability to remove the tube, in which case you will have to get creative and clean the engine. Be sure to remove the fence mesh before cleaning. It should be washed thoroughly. For this you will need diesel fuel or a special liquid purchased at the store. The tube itself is washed with the same diesel fuel, and finally blown with compressed air. Usually this is enough to restore it to working condition.

What repairs can fix the P0523 code?

If, after clearing the code from the PCM and test driving the vehicle, the oil pressure warning light comes back on, have a mechanic check the engine oil pressure sensor wires and connectors. If necessary, the mechanic will repair or replace any damaged components and recheck the system. If the problem persists, the mechanic will check the engine and oil passages. He will also check for leaks. If the engine is seriously damaged, it may need to be replaced.

Computer diagnostics

The most effective methods are those using sophisticated computer technology.

What does this method provide? First of all, it allows you to control the entire internal combustion engine. The diagnostic accuracy is exceptional. Errors that may arise as a result are automatically eliminated using special programs.

Types of work:

Computer data processing is carried out by introducing “software” (programs) into the processor of the device, focused on:

How to do it? Drivers usually use the services of a car service center. This is not the only option. With some preparation, it is possible to diagnose a car yourself.

Description of the procedure:

The state of the required systems is determined by gradually scanning each node. Defects that cannot be eliminated by the intervention of electronic correctors are eliminated during minor, medium or major repairs.

Additional comments for troubleshooting P0523

If the Check Engine light comes on and you notice that the oil pressure is too high, this could indicate a serious problem. We should not forget that the problem may not only be a malfunction of the engine oil pressure sensor (which is often found in older cars with mileage of more than 130,000 km), but also engine damage. If error P0523 appears, it is recommended that you contact a qualified technician as soon as possible to diagnose and resolve the error in order to avoid complete engine failure.

Need help with error code P0523?

The company - CarChek, offers a service - on-site computer diagnostics; specialists from our company will come to your home or office to diagnose and identify problems with your car. Find out the cost and sign up for diagnostics of any cars or contact a consultant by phone +7(499)394-47-89.

conclusions

The reasons why the “CHECK” function lights up on the Lada Grant are quite simple, since this sensor is responsible for the full operation of the engine. To identify the causes, it is worth conducting a diagnosis and determining why this happened, and only then eliminating it.

Probably every VAZ owner has encountered such a problem when, out of the blue, the “chek” error comes on. Here many people immediately panic. Don't worry, there's nothing wrong with it. Firstly, this error appears when any sensor fails (here you will have to suffer and determine which one), but all this is determined by changes in the behavior of the car: dynamics, consumption, etc. Secondly, this error appears when the wrong mixture enters the combustion chamber. This can happen in two cases: some sensor is not working correctly, or low-quality gasoline. Try using higher quality fuel the next time you fill up.

However, even if you correct the problem, the “check” will continue to light up. Many people go to computer diagnostics to clear an error, where they pay about 150-200 rubles per minute. Although it’s not a lot of money, why? If you can reset the error yourself, spending the same minute on it, and you don’t have to go anywhere. Don’t know how to reset the check error yourself? Very simple, read below.

We reset the error.

And then a miracle, the error light stopped lighting.

Even if you cannot decide why your check light came on, do not immediately run to diagnostics. Try to reset this error using the method described above. There are simply cases of accidental operation (there was an impurity in gasoline and the like). And then after the reset the error simply will not appear again. And if, nevertheless, there is some kind of problem, then the “check” will pop up again, after 50 kilometers.

...starting the car in the cold, the car started up but there was a misfire in one cylinder, the car rattled, the “Check Engine” came on, I turned it off, pressed the accelerator (gas) pedal all the way (to the floor) and turned the starter, the spark plugs blew out, the car started works well, but the Check Engine light does not go out.

How to fix runtime error 523

Below is a troubleshooting sequence to resolve Error 523 problems. This sequence is listed in order from easiest to most difficult and from least time-consuming to most time-consuming, so we strongly recommend that you follow these instructions in order to avoid unnecessary time and effort. .

Step 1: Repair registry entries associated with error 523

Manually editing the Windows registry to remove invalid Error 523 keys is not recommended unless you are a PC service professional. Mistakes made when editing the registry can render your PC inoperable and cause irreparable damage to your operating system. In fact, even one comma placed in the wrong place can prevent your computer from booting!

Because of this risk, we highly recommend using a trusted registry cleaner such as WinThruster [Download] (developed by Microsoft Gold Certified Partner) to scan and repair any Error 523-related issues. Using Registry Cleaner [Download] you can automate the process of finding corrupted registry entries, missing file references (such as those causing the %%error_name% error), and broken links within the registry. Before each scan, a backup copy is automatically created, allowing you to undo any changes with one click and protecting you from possible damage to your computer. The best part is that fixing registry errors [Download] can dramatically improve system speed and performance.

Warning: Unless you are an experienced PC user, we DO NOT recommend manually editing the Windows Registry. Using Registry Editor incorrectly may cause serious problems that may require you to reinstall Windows. We do not guarantee that problems resulting from incorrect use of Registry Editor can be corrected. You use Registry Editor at your own risk.

Before you manually repair the Windows registry, you must create a backup by exporting the portion of the registry associated with Error 523 (for example, Windows Operating System):

The following steps for manually editing the registry will not be described in this article, as they are likely to damage your system. If you would like more information about editing the registry manually, please check out the links below.

We do not accept any responsibility for the results of the actions performed according to the instructions below - you perform these tasks at your own risk.

Step 2: Conduct a full scan of your computer for malware

There is a chance that error 523 may be due to your computer being infected with malware. These malicious intruders can damage or even delete files associated with runtime errors. Additionally, there is a possibility that the 523 error is related to a component of the malware itself.

Tip: If you don't already have anti-malware installed, we highly recommend using Emsisoft Anti-Malware (download). Unlike other security programs, this program offers a malware removal guarantee.

Help us evaluate the usefulness of this post. You found what you were looking for?

Step 3: Clean your system of junk (temporary files and folders) using Disk Cleanup (cleanmgr)

Over time, your computer accumulates unnecessary files due to normal Internet surfing and daily computer use. If these junk files are not occasionally removed, they can cause the Windows Operating System to perform poorly or cause error 523, possibly due to file conflicts or an overloaded hard drive. Removing such temporary files using the Disk Cleanup utility can not only eliminate error 523, but also significantly improve the performance of your computer.

Tip: Although Disk Cleanup is a great built-in tool, it does not remove all temporary files from your computer. Other programs that you frequently use such Microsoft Office, Firefox, Chrome, Live Messenger, and hundreds of other programs are not cleaned up with Disk Cleanup (including some Microsoft Corporation programs).

Due to the shortcomings of the Windows Disk Cleanup (cleanmgr) utility, we highly recommend using specialized hard drive cleaning/privacy protection software such as WinSweeper [Download] (developed by Microsoft Gold Partner) to clean your entire computer. Running WinSweeper [Download] once a day (using automatic scanning) will ensure that your computer is always clean, running fast and free of %%error_name%% errors related to temporary files.

How to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8 and 10 ):

Step 4: Update device drivers on your computer

523 errors may be due to corrupt or outdated device drivers. Drivers can easily work today and stop working tomorrow for a variety of reasons. The good news is that most often, you can update your device drivers to fix the Error 523 problem.

Due to the time commitment and overall complexity of updating drivers, we highly recommend using a driver update utility such as DriverDoc (developed by Microsoft Gold Partner) to automate this process.

Please note: Your Error 523 may not be related to hardware driver problems, but it's always a good idea to ensure your PC device drivers are up-to-date to maximize PC performance.

Step 5: Use Windows System Restore to “Go back in time” to fix Error 523 problems. System Restore can return system files and programs on your computer to a time when everything worked fine. This could potentially help you avoid the headache of troubleshooting 523 errors.

Please note: Using System Restore will not affect your documents, pictures or other data.

To use System Restore (Windows XP, Vista, 7, 8 and 10) :

Step 6: Uninstall and reinstall the Windows Operating System program associated with Error 523

Instructions for Windows 7 and Windows Vista:

Instructions for Windows XP:

Instructions for Windows 8:

After you have successfully uninstalled your Error 523-associated program (eg. Windows Operating System), reinstall the program according to the Microsoft Corporation instructions.

Tip: If you are absolutely sure that error 523 is related to a specific Microsoft Corporation program, uninstalling and reinstalling the program associated with Error 523 will likely solve your problem.

Step 7: Run Windows System File Checker (“sfc /scannow”)

System File Checker is a handy tool included with Windows that allows you to scan and repair damaged Windows system files (including those related to Error 523).

To run System File Checker ( Windows XP, Vista, 7, 8 and 10 ):

Step 8: Install all available Windows updates

Microsoft is constantly updating and improving Windows system files related to Error 523. Sometimes, to resolve the Runtime Error problem, you simply need to update Windows with the latest service pack or other patch that Microsoft releases on an ongoing basis.

To check for Windows updates (Windows XP, Vista, 7, 8 and 10 ):

Step 9: Perform a clean installation of Windows

Warning: We must emphasize that reinstalling Windows will take a very long time and is too difficult a task to resolve Error 523 problems. To avoid data loss, you must ensure that you have backed up all important documents, images, software installers and other personal data before starting the process. If you are not currently backing up your data, you should do so immediately (download a recommended backup solution) to protect yourself from permanent data loss.

Please Note: If issue 523 persists after a clean install of Windows, your Runtime Error problem MUST be hardware related. In this case, you will likely have to replace the associated hardware that is causing the 523 error.

Poor air duct sealing

The Lada Granta passenger car, which is considered one of the most affordable in the world, is equipped with a “stove” (or simply a heater) that is standard for VAZ cars. Typically this unit works very well, but problems can still occur. Therefore, if the Lada Granta stove does not heat well, then there must be reasons for this that simply need to be discovered.

If there is quite a strong frost outside, and the interior of your car does not warm up in any way, you should pay attention to the serviceability of the engine cooling system, since the performance of the Lada Granta stove depends on it.

1. Coolant. The condition of your car’s coolant should be constantly monitored, and not only when the heater in the Lada Granta is not heating well. The normal coolant level should be kept between about and the “maximum” of the corresponding tank.

If the level is too low, problems with the sealing of the entire cooling system may occur. As a result, the pressure inside the system decreases significantly. If this problem is not resolved, then there is no point in hoping that the stove in the Lada Granta will work well.

1. Thermostat. It may happen that in the thermostat position, in which the coolant circulates in a large circle, the thermostat valves become stuck. This is the reason that in the cold season the coolant is simply not able to warm up to normal temperature and ensure good operation of the stove.

If the problem is really in the thermostat, then the car will literally begin to overheat in a matter of minutes. And when driving along the highway at a decent speed, the engine, on the contrary, will cool too quickly.

1. Air temperature regulator damper. If the stove in your Lada Granta does not work well enough, perhaps the reason lies in the functioning of the air temperature regulator damper. And all because the position of the damper directly determines the intensity of the air flow that will pass through the heater radiator, as well as the amount that will enter the car interior, bypassing the radiator.
2. Heater fan and fuse. It is necessary to monitor very carefully whether the heater fan starts working. If this does not happen, you should check the functionality of the fuse called 30A. It is green in color and indexed F4, located in the additional concentration of power fuses, which is under the hood, not far from the expansion tank.

The main purpose of a stove heater is to maintain a given temperature in the car interior, as well as to ensure an uninterrupted supply of oxygen inside.

Type of ventilation: supply and exhaust.

Heating circuit of Lada Granta: control is carried out by mechanical regulators that change the air flow speed and the direction of the damper.

In order to prevent unpleasant odors from entering the cabin, a cable-type air flow intake switch is pre-installed.

Let's look at the design of the Lada Granta stove in the “Norma” configuration:

• radiator;
• three air pipes supplying flow to the left/right/central deflectors;
• control module;
• radiator housing;
• rubber seals;
• fan;
• fan housing;
• cables, mechanical rods of dampers;
• regulator resistors.

Heater radiator

In the modification with a pre-installed air conditioner, the list is supplemented by a separate air duct, evaporator, and heater unit housing.

To adjust the fan speed mode, the regulator has a gradation scale. The car owner independently selects the optimal fan rotation mode.

Heating system regulator in the cabin

Failure of the regulator blocks the operation of the entire vehicle interior heating system.

The type of interior ventilation and heating system is supply and exhaust. The operating temperature of the interior heating fluid is in the range from 90 to 94°.

Warm (hot) air is supplied to the cabin by an electric fan. The feed speed is adjusted by a special regulator, which accelerates (reduces) the rotation speed of the impeller.

The electric motor has four positions:

• first;
• second;
• third speed;
• position: off

Stove motor

Air intake follows from the outside through air intakes under the frill in the engine compartment. A filter is pre-installed to clean the flow. Filling: synthetic material.

Air is exhausted through a ventilation window in the rear of the car, behind the bumper.

The heater module is installed in the central part of the dashboard, under the panel. During engine operation, the liquid heats up and circulates along the circuit (water jacket).

The amount of air that comes from outside is regulated by the driver. The flow distribution is also controlled by a damper using a cable drive.

1. We place the car within the perimeter of the repair area and open the hood.
2. Let's start the engine.
3. Turn the regulator counterclockwise to the blue sector.
4. Using the lever, we alternately activate the first, second, third fan speeds.

If the fan does not activate, then there is a fault in the power circuit.

We carry out diagnostics using a multimeter.

1. We activate the stove heater damper; if no changes occur, then the damper drive is faulty.
2. After the engine has warmed up to a temperature of 60 - 70°, turn the regulator lever to the red sector position.
3. We check the air temperature, it should correspond to degrees. Otherwise, the damper drive is faulty.
4. If necessary, repeat the procedure by moving the regulator to the blue sector position.

The design does not have the specified additional equipment

What to do about airing in the system?

1. Find a hill with a slope of at least 30%.
2. Place the Lada Granta on it with the front facing up.

3. Warm up the engine to operating temperature (approximately 85 degrees).
4. Squeeze the hoses vigorously until air leaves the system.

New Lada: VAZ error codes and their decoding

As a result, the car should become warmer.

They supply cold air to the heater radiator. If the air ducts are not properly sealed, cold air enters the cabin before heating. Therefore, it may be cold in the car, since some of the air flows past the radiator.

P0523 Engine oil pressure sensor switch high voltage

DTC P0520: Engine Oil Pressure Switch Circuit Malfunction

DTC P0521: Engine Oil Pressure Sensor Performance

DTC P0522: Engine Oil Pressure Sensor Circuit Low Voltage

DTC P0523: Engine Oil Pressure Sensor Circuit High Voltage

Diagnostic fault information

Short to ground

Short to supply voltage

Typical diagnostic scanner data

ECM - Engine Oil Pressure Switch

Short to ground

Short to supply voltage

Operating conditions: Engine running

Normal value range: OK

Circuit/System Description

The oil pressure switch is usually closed and opens when the oil pressure reaches a certain value. With the ignition on and the engine off, the engine control module (ECM) should detect a low voltage signal at the input voltage. When the engine is running, the engine oil pressure switch opens and the ECM detects a high signal at the voltage input. When oil pressure is low, the ECM sends a message via the high speed CAN bus to the body control module (BCM). The BCM sends a command to turn on the engine oil pressure indicator to the instrument cluster via the low-speed CAN bus.

Conditions for Diagnosing a DTC

Conditions for Setting the DTC

P0520

P0521

P0522

P0523

Action Taken When the DTC Sets

The service indicator and low oil pressure indicator on the instrument cluster come on.

Conditions for clearing a fault code

The fault code becomes archived if the conditions for setting the fault code no longer exist.

What does code U0100 mean?

Error U0100 - “loss of communication with the engine control unit ECM/PCM.”

The Engine Control Module (ECM) is the computer responsible for controlling the engine. The engine control unit interacts with other vehicle control units via a data exchange bus. This bus is called a controller area network (CAN) and allows all modules to communicate with each other.

There are two CAN buses: CAN High and CAN low. CAN High - has a high data transfer rate of 500 Kbps. CAN low - with a low data transfer rate of 125k bps. Physically it is a shielded twisted pair cable. There is a termination resistor at the end of each data channel.

The control units exchange data via the CAN bus with each other. Error code U0100 means the PCM is unable to send or receive CAN bus communication signals.